Demountable-rim device.



E. H. DAVIS.

DEMOUNTABLE RIM DEVICE. APPLICATION FILED AUG.23, 1916.

1,242,336. I Patented Oct, 9, 1917.

2 SHEETS-SHEET 1.

wi bwzoo g M E. H. DAV|S. DEMOUNTABLE RIM DEVICE.

APPLICATION FILED AUG.23| 1916- 1,242,330.. Patented Oct. 9,1917.

m th 14200 v 6 2 SHEETSSHEET 2- ELAM H. DAVIS, OF MEMYHIS, TENNESSEE.

. 'DEMOUNTABLE-BIH DEVICE.

Application filed August 23, 1916. Serial No. 116,408.

To all whom it may concern: a

Be it known that I, ELAM H. DAVIS, a citizen of the United States, and resident of Memphis, in the county of Shelby and State of Tennessee, have invented certain new and useful Improvements in Demountable-Rim Devices, of which the followingis a specification, reference being had therein to the accompanying drawing.

This invention relates to demouifr table wheelrims, and a" leading object is to provide an improved rim which is simple, inexpensive, not liable to accident or accidental detachment, and that is very quickly detached or demounted and replaced when desired.

In the accompanying drawings,

Figure 1 isa side view of a wheel embodying my invention, parts being broken away to show a member in a plane parallel to the face of the wheel.

Fig. 2 is a view looking toward the center of the 'Wheel and showing-portions of mutually engaging rim holding ring members, the two being slightly separated.

Fig. 3 is an enlarged view of adjusting devices seen in F ig, 1, parts being broken away.

Fig. 4 is a section on the line 44, Fig. 3.

Fig. 5 is a section on the line 5-5, Fig. 3.-

' Fig. 6 is a section on the line 6-6, Fig. 1.

Fig. 7 is a section on the curved line 7-7, Fig. 1.

'In these figures, 10 represents an ordinary wheel the felly 11 of which is encircled. by a two-part band or ring 12 divided in or parallel to the plane of the wheel and holding a demountable rim 13 in which is mounted a pneumatic tire '14, the rim and tire being without novelty-and usually carried as a whole with the tire fully inflated, so that substituting this tire for another requires only putting this rim in place and securing it on the wheel. The main part of the band 12 consists of a ring 15 fitting the periphery of the felly and having on one lateral face of the latter a flange 16, which is secured to the felly by bolts 17, clips. 17 being placed on the bolts beneath the nuts to press against the band. On the side opposite said flange, the band has an outwardly projecting flange 15' against which the rim l3 fits and' at the opposite side of the felly it is cut away to form wedge-like spaced lugs or teeth 18. The other part of the band 12 is a ring 19 having on its outer side a Specification of Letters Patent.

Patented flange 20 adapted to fit the rim 13 and coact With the flange 15' in holding the rim. The

opposite side of this ring is providedwith wedge-like teeth 21 in position to pass b e cease, 191 '7.

tween the teeth 18 and by relative rotation of the ring engage them,,respectively, and bind this ring to the mainpart 1510f the band while pressing the flange 20" against the rim. To compel therelati'vefrotation of the two parts, the ring;19 is provided with integral lugs 22 on its-inner surface and each of these is engaged by a dividedblock 23, 24: which moves freely on a threaded rod 25 and which lies between nuts' 2 271bIy which the block and lug are forced to travel with respect to the rod. This rodfis pivoted at one end to a clip 28,.sec1ired'to, :1 "spoke alongside the felly, to swing in the, plane of the wheel. When swung toward the felly its free end enters a notch 29 ina clip 30 secured to the adjacent spoke, and is thus held against movement from the plane in which it swings. One part at least of the divided block has a lip 31 which engages under "the swinging from the felly. Whenthe ring is to be forcibly rotated for attaching the rim,

one of the nuts is screwed agaihstthe adjacent block, after the other nut has been moved slightly from the block, and the 101001;

pushing the lug 22 compels the ring 19 to rotate and engage its teeth 21 behind the teeth 18, of the ring 15. When this engage ment is fully completed, the other nut is screwed firmly against the opposite side of the block, each nut thus serving as a locknut for the other. The lip 31 now holds the block against moving inwardly and the notch 29 prevents the threaded rod 25 from bending or moving with respect to the plane of the wheel. When the rim is to be detached, one nut is moved fromtheblock far enough toallow the slight lip 31 to disengage, the other nut is forced strongly against the block, and, if necessary, the projecting lug 22 is given a smart blow, such.

the wheel; A further locking. device is also lug, and thus the rod is locked 'against Y employed at an intermediate point on the forcibly screwed home.

. the ring 19 in the manner already set forth,

and when thering has been brought to position, the bolt is made slightly inclined to the plane of the telly, the serrated washer is engaged with the serrated plate and the nut is The tendency is to force still further engaging motion of the ring 19, and the bolt and serrated connections lock the parts against con rary move ment. With this added lockmg device, the

parts are rigidly locked and never, in use, allow the rim to become loose accidentally.

The band or two-part ring forms a sort of channel member to receive and hold the tire :arrying rim.

llVh-at I claim is fixed, thereto a telly-receiving, 1 rim-encircling channel member, of a c-o-acting channel member provided with an inwardly extending projection and adapted to interlock with the member first mentioned by relative rotation, a rod having at one end a hinge fixed with respect to the member first'mentioned and permitting the rod to swing to ward and from said projection, means carried by the rods middle portion for engaging and disengaging said projection as the rod swings back and forth, devices for forcing said means to travel back and forth upon the rod and locking said means from disengagement, and means for holding the non-hinged end of the rod'in the plane in which it swings.

The combination with a wheel having a rigidly attached peripheral channel member, of a second channel member adapted for engaging the first by relative rotation, a threaded rod pivoted to the wheel at one end .1. The comblnation with a wheel having messed to swing in the wheels plane toward and away from the inner side of the channel, devices sliding on the rod and adapted to en: gage and disengage the second member as the rod moves toward and away from the same, nuts for forcing said devices along the rod, and means for locking the rod against swinging when said devices are engaged.

3. The combination with a wheel telly having a rigidly attached'peripheral channel member, and provided with' a transverse slot, of a coacting channel member having a flange extending over the face of the any, a bolt passing through said flange and through the telly in said slot, a plate fixed to the telly upon the side opposite said flange and having serrations alongside said slot, a bolt provided at one end with devices to engage the serrated plate and at the other end with devices for engaging said flange.

l. The combination with a wheel telly having a rigidly attached peripheral channel member andprovided with a transverse slot-like passage for a bolt, of .a correspond ingly slotted serrated plate fixed to one side of the telly, a rocking serrated washer engaging the plate, a second channel member having a perforated flange extending over the other side of the telly, a bolt passing through said washer, plate, slotted telly and flange, and a rocking nut engaging said bolt and locking rigidly the parts through which the bolt passes.

5. The combmation'with a wheel having spokes, and a telly provided. with a rigidly attached channel member, of a second channel member adapted to engage the first .by relative rotation and provided with a lug pro ecting over the inner fac the member first mentioned, collars spokes, respectively, on each side of said lug,

a threaded rod pivoted on one of said 001- lars to swing in the plane of the wheel into and out of a notch in the other collar, a bloclrsliding on said rod and adapted to move against said lug and to engage beneath the same, and nuts working on the rod on opposite sides of the lug.

In testimony whereof I hereunto affix my signature.

nines: lei. DAVIS, 

